[PATCH net-next 4/4] octeontx2-pf: TC flower offload support for SPI field
From: Ratheesh Kannoth
Date: Mon Jul 31 2023 - 07:35:15 EST
Driver support to offload TC flower rules which matches
against SPI field of IPSEC packets (AH/ESP).
Signed-off-by: Ratheesh Kannoth <rkannoth@xxxxxxxxxxx>
---
.../net/ethernet/marvell/octeontx2/af/mbox.h | 4 +++
.../net/ethernet/marvell/octeontx2/af/npc.h | 1 +
.../marvell/octeontx2/af/rvu_debugfs.c | 4 +++
.../marvell/octeontx2/af/rvu_npc_fs.c | 11 ++++++++
.../ethernet/marvell/octeontx2/nic/otx2_tc.c | 27 +++++++++++++++++++
5 files changed, 47 insertions(+)
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
index ed66c5989102..a8f3c8faf8af 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
@@ -1451,6 +1451,10 @@ struct flow_msg {
__be32 ip4dst;
__be32 ip6dst[4];
};
+ union {
+ __be32 spi;
+ };
+
u8 tos;
u8 ip_ver;
u8 ip_proto;
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/npc.h b/drivers/net/ethernet/marvell/octeontx2/af/npc.h
index 9beeead56d7b..534f20c0c5df 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/npc.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/npc.h
@@ -204,6 +204,7 @@ enum key_fields {
NPC_DPORT_UDP,
NPC_SPORT_SCTP,
NPC_DPORT_SCTP,
+ NPC_IPSEC_SPI,
NPC_HEADER_FIELDS_MAX,
NPC_CHAN = NPC_HEADER_FIELDS_MAX, /* Valid when Rx */
NPC_PF_FUNC, /* Valid when Tx */
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
index 3b26893efdf8..7cd33edca365 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
@@ -2827,6 +2827,10 @@ static void rvu_dbg_npc_mcam_show_flows(struct seq_file *s,
seq_printf(s, "%d ", ntohs(rule->packet.dport));
seq_printf(s, "mask 0x%x\n", ntohs(rule->mask.dport));
break;
+ case NPC_IPSEC_SPI:
+ seq_printf(s, "0x%x ", ntohl(rule->packet.spi));
+ seq_printf(s, "mask 0x%x\n", ntohl(rule->mask.spi));
+ break;
default:
seq_puts(s, "\n");
break;
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_fs.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_fs.c
index 9c365cc3e736..bb715e616fad 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_fs.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_npc_fs.c
@@ -41,6 +41,7 @@ static const char * const npc_flow_names[] = {
[NPC_SPORT_SCTP] = "sctp source port",
[NPC_DPORT_SCTP] = "sctp destination port",
[NPC_LXMB] = "Mcast/Bcast header ",
+ [NPC_IPSEC_SPI] = "SPI ",
[NPC_UNKNOWN] = "unknown",
};
@@ -513,6 +514,10 @@ do { \
NPC_SCAN_HDR(NPC_VLAN_TAG1, NPC_LID_LB, NPC_LT_LB_CTAG, 2, 2);
NPC_SCAN_HDR(NPC_VLAN_TAG2, NPC_LID_LB, NPC_LT_LB_STAG_QINQ, 2, 2);
NPC_SCAN_HDR(NPC_DMAC, NPC_LID_LA, la_ltype, la_start, 6);
+
+ NPC_SCAN_HDR(NPC_IPSEC_SPI, NPC_LID_LD, NPC_LT_LD_AH, 4, 4);
+ NPC_SCAN_HDR(NPC_IPSEC_SPI, NPC_LID_LE, NPC_LT_LE_ESP, 0, 4);
+
/* SMAC follows the DMAC(which is 6 bytes) */
NPC_SCAN_HDR(NPC_SMAC, NPC_LID_LA, la_ltype, la_start + 6, 6);
/* PF_FUNC is 2 bytes at 0th byte of NPC_LT_LA_IH_NIX_ETHER */
@@ -564,6 +569,9 @@ static void npc_set_features(struct rvu *rvu, int blkaddr, u8 intf)
if (!npc_check_field(rvu, blkaddr, NPC_LB, intf))
*features &= ~BIT_ULL(NPC_OUTER_VID);
+ if (*features & (BIT_ULL(NPC_IPPROTO_AH) | BIT_ULL(NPC_IPPROTO_ESP)))
+ *features |= BIT_ULL(NPC_IPSEC_SPI);
+
/* for vlan ethertypes corresponding layer type should be in the key */
if (npc_check_field(rvu, blkaddr, NPC_LB, intf))
*features |= BIT_ULL(NPC_VLAN_ETYPE_CTAG) |
@@ -930,6 +938,9 @@ do { \
NPC_WRITE_FLOW(NPC_DPORT_SCTP, dport, ntohs(pkt->dport), 0,
ntohs(mask->dport), 0);
+ NPC_WRITE_FLOW(NPC_IPSEC_SPI, spi, ntohl(pkt->spi), 0,
+ ntohl(mask->spi), 0);
+
NPC_WRITE_FLOW(NPC_OUTER_VID, vlan_tci, ntohs(pkt->vlan_tci), 0,
ntohs(mask->vlan_tci), 0);
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c
index 5a44e9b96fc0..4bb511e3cbe5 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_tc.c
@@ -461,6 +461,7 @@ static int otx2_tc_prepare_flow(struct otx2_nic *nic, struct otx2_tc_flow *node,
BIT_ULL(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
BIT_ULL(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
BIT_ULL(FLOW_DISSECTOR_KEY_PORTS) |
+ BIT(FLOW_DISSECTOR_KEY_IPSEC) |
BIT_ULL(FLOW_DISSECTOR_KEY_IP)))) {
netdev_info(nic->netdev, "unsupported flow used key 0x%llx",
dissector->used_keys);
@@ -482,6 +483,8 @@ static int otx2_tc_prepare_flow(struct otx2_nic *nic, struct otx2_tc_flow *node,
match.key->ip_proto != IPPROTO_UDP &&
match.key->ip_proto != IPPROTO_SCTP &&
match.key->ip_proto != IPPROTO_ICMP &&
+ match.key->ip_proto != IPPROTO_ESP &&
+ match.key->ip_proto != IPPROTO_AH &&
match.key->ip_proto != IPPROTO_ICMPV6)) {
netdev_info(nic->netdev,
"ip_proto=0x%x not supported\n",
@@ -501,6 +504,10 @@ static int otx2_tc_prepare_flow(struct otx2_nic *nic, struct otx2_tc_flow *node,
req->features |= BIT_ULL(NPC_IPPROTO_ICMP);
else if (ip_proto == IPPROTO_ICMPV6)
req->features |= BIT_ULL(NPC_IPPROTO_ICMP6);
+ else if (ip_proto == IPPROTO_ESP)
+ req->features |= BIT_ULL(NPC_IPPROTO_ESP);
+ else if (ip_proto == IPPROTO_AH)
+ req->features |= BIT_ULL(NPC_IPPROTO_AH);
}
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) {
@@ -545,6 +552,26 @@ static int otx2_tc_prepare_flow(struct otx2_nic *nic, struct otx2_tc_flow *node,
}
}
+ if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IPSEC)) {
+ struct flow_match_ipsec match;
+
+ flow_rule_match_ipsec(rule, &match);
+ if (!match.mask->spi) {
+ NL_SET_ERR_MSG_MOD(extack, "spi index not specified");
+ return -EOPNOTSUPP;
+ }
+ if (ip_proto != IPPROTO_ESP &&
+ ip_proto != IPPROTO_AH) {
+ NL_SET_ERR_MSG_MOD(extack,
+ "SPI index is valid only for ESP/AH proto");
+ return -EOPNOTSUPP;
+ }
+
+ flow_spec->spi = match.key->spi;
+ flow_mask->spi = match.mask->spi;
+ req->features |= BIT_ULL(NPC_IPSEC_SPI);
+ }
+
if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IP)) {
struct flow_match_ip match;
--
2.25.1